Thin leaf-like sheets and method of making the same.



,is reduced onrrni) STATES PATENT OFFICE CHRISTOEHER JOSEPH HEALY, OF NEW YORK, N. Y., ASSIGNOR OE THREE-EIGHTHS TO CHARLES BRUECKNER, OF BROOKLYN, NEW YORK, AND ONE-FOURTH TO JAMES HAMILTON, OF EAST ORANGE, NEW JERSEY.

THIN LEAF-LIKE SHEETS AND METHOD OF MAKING THE SAME.

No Drawing.

To all whom it may concern:

Be it known that T, Cnmsrorunn Josnrn lInALY, a citizen of the United States, residing in the borough of Brooklyn, city of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Thin Leaf- Like Sheets and Method of Making the Same, of which the following is a specification.

My invention relates to improvements in compositions of matter and methods of making the same and particularly to compositions of matter for use as leallikc material in the arts; and an object of my invention is to provide a composition of the character described and a method of making the'samo which will be simple, comparatively cheap and most etiicient.

I have discovered that lentlike material may be made from resinous substances, such as resins, gums and copals; and the method bywhich I treat the resinous substance to produce the leallike material is as follows: it commercial gum or resin is used, it will be found to contain a certain amount of fatty or greasy substance which should be removed. 'lodo this, the resinous material to a liquid state by heating it and the resulting liquid is then mixed with a suitable saponifier, such as caustic soda. 'lhe soap produced by the resulting reaction is washed away and the resinous substance is thus thoroughly cleansed of the fatty, olcaginoi'ls or greasy material which enters as an impurity. 'lhe cleansed resin is now allowed to dry and is next dissolved in any suitable solvent, such as alcohol,ethcr, acetone, amyl acetate, bcnzole, naphtha, gasolene, benzin, turpentine or a mixture of any two or more of these solvents. To the solution so formed, an oil is added, care bcingtakcn that. the oil used is compatible with the particular solvent or solvents to which it is addcdf A suitable min-adherent surface is next prepared to receive the solution so that, when the latter is poured upon the surface, it will spread out in a thin sheetwithout adhering to the latter. Such a surface is the surface ol. a two per cent solution of nitric acid.

When the solution of oil. resinous substance'and solvent is poured upon the nonadherent surface. it spreads out In a thin Specification of Letters Patent.

Patented Apr. 25, 1911.

'lhe lea tlike material may be readily given any desired color. For this purpose a suitable coloring matter or pigment is added to the solution of the resinous substance. If the leatlike material is to be colored and opaque, an earthy pigment 0r coloring substance may be used; while if the leaflike material is to be colored and yet transparent, an anilin coloring substance may be added. it coloring substances are used, the oil used should be such as is compatible with the coloring matter selected. The latter should be such as will mix freely and readily with the oil and solvent to which it is added. As examples of the oils which may be found suitable for use in' thc preparation of mynew lea llikc material, the following may be named: essential oils, mineral OllS, parailin oil, t'usel oil, linseed oil, castor oil, kidney oil, olive oil and chinawood oil; but any oil cou'ipatiblewith a mixture of spirits and coloring matter may be used. Among the 1. The method of making a thin trans.

parent colored leaflike sheet consisting in dissolvmga resinous substance in a suitable solvent; adding an oil; introducing an anilin coloring matter; and pouring the mixture thus formed upon the surface of an acid solution.

2. The method of a making a thin colored lcaflike sheet consisting in dissolving a resinous substance in a 'suitable solvent; adding an oil; introducing a coloring matter; and pouring the mixture thus formed upon the surface of an acidsolution.

. 3. A,,thin leaflike sheet formed by dissolving a resinous substance in a suitable solvent; adding a coloring matter; and pourifng the mixture upon a non-adherent surace.

1. A thin leafiike sheetformed by dissolving a resinous substance in a suitable solvent; adding an oil; introducing coloring matter; and pouring the mixture upon a non-adherent surface.

5. A thin transparent colored leaflike sheet formed by dissolving a resinous substance in a suitable solvent; adding an oil;

introducing an anilin coloring matter; and pouring the mixture upon a non-adherent surface.

Signed at New York city, New York, this first day of December, A. D. 1909, in

the presence of the two undersigned Witnesses.

CHRISTOPHER JOSEPH HEALY.

Witnesses:

CHARLES BRUEOKNER, JAMES HAMILTON. 

